You have a windows server 2008 compute that has an IP address of 172.16.45.9/21. The server is configured to use ipv6 addressing. You need to test IPv6 communication to a server that has an ip address of 172.16.40.18/21, what should you do from a command prompt?（）

• A、Type ping 172.16.45.9::::.
• B、Type ping ::9.45.16.172.
• C、Type ping followed by the link-local address of the server.
• D、Type ping followed by the site-local address of the server.